Cable telegraphy.



I, KITSBE.

CABLE TELEGRAPHY.

APPLICATION FILED NOV.14,1907. RENEWED APR.2,1912.

.m4&, 3; Patented Nov. 12, 1912 IN VEN TOR.

I i 1 TNESSJZS: f l

of the United cannot be. differentiated by the arrangements for so s ares ilt llld IEENNSYLVAN ASSEGNGR 3F QIQE-HAJEJF if PHILADELPHIA, PENNSYLVANIA.

t ll-fieldin Specification of letters latcnt.

Application. filed It'ovember 14., 1907, Serial Ito. 02,137.

Patented Nov. ill lid. Renewed. April 2. low. Serial. No. 6825331.

To all whom it may concern:

Be it known. that I, .lsmon Krrsnii, citi- States. residing at Philli delphia in the county of Philadelphia and State of Pennsylvania. have invented certain new and useful Improvements in. Gable Telegraph of which the following is a specification.

My invention relates to an improvement in cable telcgraphy.

It has more specialreference to the receiving device or relay of a cable system.

The peculiar condition of a cable system makes it necessary that a very sensitive device should be employed for the purpose of receiving or rclayinq' the impressed inipulses.

The condition of the cable makes it also necessary that the relay should be of a type of which the movable part has a zero-position. In cable telcgrapliy, the dot and dash a shorter or longer flow of current, for the reason that the necessary employment of condensers limits the low of. the in'ipul c To receive therefore impulses impressed on the cable with the aid of relay having a. zero-position. it is necessary to provide means so to translate the impulses transmitted into the required dots and dashes of the alphabet. and the aim of my invention is to provide such means.

The drawing represents in partial plan and partial diagrammatic view a relay provided with my invention.

1 is the relay proper. I have here only illustrated the same in conventional Sign but will state that the contacting arms 2 and are normally in contact: with each other and adapted to he brought out of contact with each other through the incoming impulses. This relay is host adapted for such systems in Which the closing of the hey as Well as the opening of the lacy transmits impulses adapted .to operatethe relay in a manner, so that each impulse should open the closed contacts of 2 and 3. It is unnecessary for me to go into detail of transmitting such in1- pulses or go into detail. of the relay itself. as difierent transmitting arrangements may be employed and the relay may he of any I l I desired or practical type provided with a zero position. 7

The arrangement for translating the re ceived impulses is follows :The contacts 2 and 3 are locally connected to an electric circuit and this circuit is here shown to comprise Wire 4, wire and battery For the purpose of eliminating sparliiing' or sticking by the breaking of the contacts 2 and 3, l have provided the circuit here With the condenser 7 and the resistance 8. In. reality, therefore, the circuit including the battery 6 is never broken, but only the resistance 8 short circuited.

9 is a polarized dillerential relay comprising the windings 10 and 11. armature 12 and the forward stops l3 and 14;. The windings l0 and 11 are connected tosether at the point 15 and the terminal ot the winding 10 is connected with one pole of the battery 6 and the terminal of Winding 11 With the second pole of said battery, here shown with the interposition of a variable resistance 16.

17 is a. polarized device comprising the "winding 18, armature l9 and forward no i r Q0 and the forward. stop 20 is connected tlnoa v re 9.2 with one terminal of the winding 10 of the device 9; and the forward stop 21 is connected. through Wire 133 with one terminal of the Winding- 11 of the same device.

24 and are sources of current connected together in series, here shown as hatt i s.

The junction 26 of these batteries is connected through Wire oi the Winding 18 of the device .17, the other terminal of this winding being connected through Wire 27 with. the armature l2 of the device 9. The forward stop 13 of this device is connected through wire 29 with one pole. here shown as the negative pole of the battery 25, and the for *ard stop H- of said device is connected through wire 30 with one terminal of the coil of electro-mag'nct 31, here representing in conventional sign a sounder; the other terminal of said coil is connected through wire with one pole, here shown as the positive pole oi? the hattery The operation of this device-is as follows: Normally, that. when the line is idle. the armature- 12 of the device 9 rests against the forward stop 13 and the am'natnre lEl oil? ell with one terminal battery.

vpoint 13.

now, through an incoming impulse,-

the device 1'? rests against the forward stop 20. the contacts 2- and 3 are normally closed, thereby shunting the resistance 8,

the flow oi. the current from the battery 6 .will not be through the resistance 16 and through either one 01": the windings 10 or 11, of the device 9, but will be through the circuit com prisin the wires 1 and 5.

as stated ve, normally'the armature 12 ofthe device 3 Will rest against the forward The arrangement of thewinding 18 of the device 17 is such that if the current from battery 25 will flow through this winding, the armature 19 will be drawn toward to and in contact with the forward point .20, as is illustrated in the drawing. in none of the devices, therefore, Willbe an electric energy tending to move the armatures from their normal positions. Then,

the conmomentarily opened, the

tacts 2 and 3 are circuit a, 5, will be broken and the flow from the battery 6 will he in the main through 22, 20, 19, 10, junction 15, winding 11, variable resistance 16, hack to the. other pole of said The arrangement oithe windings oi the device 9 is such that the tlovvof the curfoot, as just described, will move the armature 12 from the forward point 13 toward to and in contactwith the point 1 1. During the time of? the movement from 13 to 14, no changer-due toditlerent groupings of elec tric CDI1'QHt$-W1ll he apparent in any of the devices 9 or 17. But-as soon as the armature 12has reached the contact 1 and has connected with same, a circuit Willbe established including contact tro-magnet 51, Wire, 32, battery. winding 18 of device 1'2, wire 2? and armature 12. Through the making of this circuit, the armature of device 31 will be drawn downward and at the same time the arma- 24:, wire 11,

ture 19 of the device 17 will be drawn away from the contact 20 and tovvardto and in connection with 21. lfhe breaking oi the armature 1'?) from the'contactQO Wlll 'break the circuit including the winding 11 of the device 9, and the connecting of the armature 19 with the forward point 21 "will make a circuit including the winding 10.

It has to hetaken intoconsidcration that the opening of the contacts 2 and 3 is of such short duration that said contacts will be closed before the armature 12 has made neccssary good connection with the forward point 11,-so that Whenthrough -this connection, the armature 1%) of the device 17 changes its position, the current from 6 is already short circuited through the Wires 4- and 5 and the contacts 2 and 3.

It is now supposed that the operator at the transmitting station transmits a message in accordance with the Morse code, that is, dots and dashes and that he closes his key release (or automatic transmitting device) for a short period to denote a dot and for a longer neriod to denote a dash.

The resultant effect on the device, as above described, will he as follows :-As soon as the impressed. impulse, due to the closing of the key, or automatic device, has reached this key coincides with 14, wire 30, eleccontacts 2 and 3.

the relay 1, the contacts 2 and 3 will nion1cntarily open. This momentary opening will drive the armature 12 to contact let, thereby closing the circuit including the translating device, such as a sounder, and force the armature 1?) into contact with 21. The circuits will remain in this state till the opera tor at the transmitting station releases his key. The releasing of this key will impress u on the line an impulse, the resultant eilect o't which is again to open momentarily tho During the period of opening, the current will flow through the winding 10 and this current will force the armature 12 away from 14:, thereby breaking thccircuit including the translating device 31; and as the armature will reach the forward contact 13, the establishment of this circuit will force the armature 19 away trom and in cont-act with 20. The time during which the circuit including the. translating device 31 is closed will, therefore, coincide with the time during which the key, or automatic device, is closed at the transmitting station; and as the closing time of the transmitted character, that is, dot or dash, it is obvious that the characters, dots or dashes, will he translated by the device31, in the same man nor as they are now transmitted with the aid of sounder-s or devices similar in their action.

It is obvious and Well known in art that the device 31 may he operatively connected to circuits operating printers or the like.

1 have provided t e circuits of the wind" 51,150 as to force the largest amount of current from the battery 6 through that wind ing which is connected through the arms-- tur'e 19 with said battery,

Having now described my invention, what 1 claim as new and desire to secure by LettersPatcnt is 1 1. In telegraphy, a receiving relay, alocalized circuit, a polarized differential device operativeiy related to said localized circuit; a second polarized device, means o 'vcrati'vcly related to said second device to shunt one or the other of the windings of said differential device; a second local circuit and means opcratively related to the first named device to move the armature of the second device to the right or left in accordance with the movement of the armature of the first named device and translating device operativcly related to said polarized devices.

operatively related to said first device, and

an electromagnetic translator adapted to be operated through. the movement. of said de-" vices.

3. Means to receive and translate impulses of equal duration, said means comprising a receiving relay, a localized circuit, a differential relay and source of current for said circuit, means to short circuit said cirunit through one receiving relay and a third relay provided with means to short circuit one or the other of the windings of the tllllt ititf relay, in combination with a translating device operatively related to the dilierential relay.

4. In combination with a receiving relay two electromagnetic devices operatively related to said relay, one of said devices pro vided with two windings, the other of said devices provided with means to shunt one or the other of said windings, a translating device and means to operate the second of said devices and translating device through the operation of thefirst named device. e

In cable telegraphy, means to receive and. translate impulses of equal duration,

said means comprising a receiving relay, :1 second relay connected to a local circuit, means at the first relay to operate said local circuit, a third relay adapted to be operated through the second relay, the third relay provided with means to change the flow of the current into the secondrelay and a t'anslating device operatively related to the second and third relays.

(3. In a translating device for telegraphic impulses, a receiving relay, polarized differential relay operatively related to said first relay, and means to change the flow of the current through said second relay after each received impulse.

. In testimony whereof I atiix my signature in presence of two witnesses.

ISIDOR KITSEE.

' \Vitnesses: 

